复制HashSet的元素到数组

import java.util.HashSet;

public class CopyAllElementsToArray {

public static void main(String[] args) {
    // TODO Auto-generated method stub
     HashSet hSet = new HashSet();
        hSet.add(new Integer("1"));
        hSet.add(new Integer("2"));
        hSet.add(new Integer("3"));
       
        Object[] objArray = hSet.toArray();
       
        for(int index=0; index < objArray.length ; index++)
          System.out.println(objArray[index]);
}

}
Console：
1
2
3